So my OMG AD is on its way and next order is going to be the extender and maybe 7 18650 batts. My question is this: would it be better to rotate those 7 batteries so each of them would only be used once a week? or should I store the other 6 and once the first isn't holding battery life anymore and then use the second. I'm looking for whatever solution is going to make these batteries last the longest. If I store them what voltage should I store them at? and even if I rotate wouldnt I have to keep them at a certain voltage because they will all be sitting for 6 days before being used again?